Speedboxer

The Comment Approval Notification plugin will send an email to the comment author when you approve their comment. The email sent is fully customizable, with shortcodes, through a settings page.
Please note that this plugin has only been tested with PHP 5.2.x.
A full list of available shortcodes is available <a href="http://mattsblog.ca/plugins/comment-approval-notification/#shortcodes" title="Available Shortcodes" rel="nofollow ugc">here</a>.

Comment Approval Notification

Sends an email to the comment author when their comment gets approved (only if it's held for moderation).

FolioVision

We’ve always found the comment moderation/management a bit weak (no wonder so many people are using the Disqus crutch). Our plugin Thoughtful Comments supercharges comment moderation by moving it into the front end (i.e. in context). It also allows banning by IP, email address or domain.
Unlike many comment plugins, Thoughtful Comments works hand in hand with Akismet, feeding all the information into Akismet as well as the existing WordPress whitelist and blacklist features.
What’s cool about Thoughtful Comments is that you can add it to a WordPress site with no changes to existing comment moderation tables and you can remove it from a WordPress site with no loss of core functionality. I.e. I think Thoughtful Comments could be integrated into core with a minimum amount of pain. Thoughtful Comments works with all current Subscribe to Comment plugins as well. As we use all core functions and tables, Thoughtful Comments works with all current Subscribe to Comment plugins as well.
Thoughtful Comments is the most powerful and useful code we’ve ever written (we have four very popular plugins). It’s integration into core would save many, many site owners the pain of Disqus.
Thoughtful Comments is entirely stable and active on some of the most heavily commented political and lifestyle sites in the world.
While Automattic has a horse in the ring (Intense Debate), we’d really like to see Thoughtful Comments included in core.
<h3>Features:</h3>
<ul>
<li>Front-end comment moderation – for logged in users with required permission</li>
<li>Unapproved comments shown in front-end – for logged in users with required permission</li>
<li>Per-user moderation settings</li>
<li>Comment caching – lightening PHP load and speeding up busy sites significantly – works with any WP cache plugin!</li>
</ul>
<a href="http://foliovision.com/seo-tools/wordpress/plugins/thoughtful-comments/" rel="nofollow ugc">Download now!</a>
<a href="http://foliovision.com/seo-tools/wordpress/plugins/thoughtful-comments/" rel="nofollow ugc">Support</a> | <a href="http://foliovision.com/seo-tools/wordpress/plugins/thoughtful-comments/changelog/" rel="nofollow ugc">Change Log</a> | <a href="http://foliovision.com/seo-tools/wordpress/plugins/thoughtful-comments/installation/" rel="nofollow ugc">Installation</a> | <a href="http://foliovision.com/seo-tools/wordpress/plugins/thoughtful-comments/usage/" rel="nofollow ugc">Usage</a>
<h3>Theme compatibility</h3>
If you want to get the most correct display when deleting a comment and preserving it’s replies, you need to use a theme which is using “cascade” display of the comments instead of “nested” display.
Thoughtful Comments assumes that each comment is contained in some HTML element with unique ID which is containing the comment ID, so it works with most of the themes.
Also, commenter name should not be in cite tag, so that the HTML highlight will appear properly and not as readable HTML (similar to code tag).

FV Thoughtful Comments

FV Thoughtful Comments adds front end comment moderation including sophisticated banning mechanisms. Say Goodbye to Disqus!

Comment Approval Notification vs FV Thoughtful Comments